Preparation method for wettability controllable porous structure of titanium and titanium alloy surface

A technology with porous surface and titanium alloy, applied in metal material coating process, gaseous chemical plating, coating, etc., can solve the problems of decreased biological activity, decreased bonding strength between coating and substrate, and reduced service life of implants. Achieve the effect of increasing the degree of combination and good timeliness
CN102345134BInactive Publication Date: 2013-02-13蔺增
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
蔺增
Publication Date
2013-02-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preparation method for a wettability controllable porous structure of a titanium and titanium alloy surface, and belongs to the technical field of surface modification of biological implant materials. The method comprises the following steps of: performing roughening treatment on the titanium and titanium alloy surface by using a sand-blast, large-grit and acid-etch method (SLA) to prepare a super-hydrophilic surface with a micron-nano double-microcosmic pore structure; preparing a titanium oxide thin film with hydrophilic performance by using a plasma oxidation process, wherein osteoblast adhesion and proliferation experiments show that the surface prepared by the process method has excellent bioactivity; and finally, forming a hydrophobic surface on a rough titanium oxide surface by using a molecular self-assembly method and realizing mutual switching between hydrophilicity and hydrophobicity of the surface by using plasma treatment and ultraviolet irradiation. The hydrophilicity of the surface of an implant is obviously improved in the aspects of stability, durability and the like; and the binding force of the metal implant material and a surface coating can be obviously improved while the bioactivity of the titanium and titanium alloy surface is guaranteed.
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Description

technical field

[0001] The invention belongs to the technical field of surface modification of biological implant materials, in particular to a method for preparing a porous structure on the surface of titanium and titanium alloys with controllable wettability. Background technique

[0002] Titanium and its alloys have good mechanical properties, biocompatibility and corrosion resistance, and are considered to be the most important hard tissue replacement materials at present, and are artificial joints (hip, knee, shoulder, ankle, elbow, wrist, finger joint, etc.) , orthopedic trauma products (intramedullary nails, steel plates, screws, etc.), spinal orthopedic internal fixation systems, dental implants, dental trays, dental orthopedic wires, artificial heart valves, interventional cardiovascular stents and other medical implant products Material.

[0003] Titanium is an inert material with poor biological activity and lack of initiative in the process of osseointegration, ...

Claims

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